Add glx functions helpers.

Add some glx functions.

1 files changed, 47 insertions, 0 deletions

diff --git a/src/render/mglfunctions.h b/src/render/mglfunctions.h
new file mode 100644
index 000000000..e68da7f11
--- /dev/null
+++ b/src/render/mglfunctions.h
@@ -0,0 +1,47 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2012-2014  The ManaPlus Developers
+ *
+ *  This file is part of The ManaPlus Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef RENDER_MGLFUNCTIONS_H
+#define RENDER_MGLFUNCTIONS_H
+
+#ifdef USE_OPENGL
+
+#include "logger.h"
+
+#ifdef WIN32
+#define getFunction(name) wglGetProcAddress(name)
+#elif defined ANDROID
+#define getFunction(name) eglGetProcAddress(name)
+#elif defined __APPLE__
+#define getFunction(name) nullptr
+#else
+#define getFunction(name) glXGetProcAddress(\
+    reinterpret_cast<const GLubyte*>(name))
+#endif
+
+#define assignFunction(func, name) m##func \
+    = reinterpret_cast<func##_t>(getFunction(name)); \
+    if (m##func == nullptr) \
+        logger->log(std::string("function not found: ") + name); \
+    else \
+        logger->log(std::string("assigned function: ") + name);
+
+#endif  // USE_OPENGL
+#endif  // RENDER_MGLFUNCTIONS_H